CN110805673A - Impact-resistant mechanical stepless speed changer - Google Patents

Impact-resistant mechanical stepless speed changer Download PDF

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Publication number
CN110805673A
CN110805673A CN201911288993.6A CN201911288993A CN110805673A CN 110805673 A CN110805673 A CN 110805673A CN 201911288993 A CN201911288993 A CN 201911288993A CN 110805673 A CN110805673 A CN 110805673A
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CN
China
Prior art keywords
gear
output
rack
shaft
straight
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Pending
Application number
CN201911288993.6A
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Chinese (zh)
Inventor
于广滨
李纬国
毛汉成
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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Publication date
Application filed by Harbin University of Science and Technology filed Critical Harbin University of Science and Technology
Priority to CN201911288993.6A priority Critical patent/CN110805673A/en
Publication of CN110805673A publication Critical patent/CN110805673A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
    • F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers

Abstract

An impact-resistant mechanical stepless speed changer comprises a rack, a speed regulating mechanism, an input shaft, two planetary gear train transmission mechanisms, a straight gear I, a straight gear II, an improved crank mechanism, an output mechanism and an output shaft. The speed regulation mechanism is installed in the frame, and speed regulation mechanism's control gear and idler extend gear engagement with two star gear train drive mechanism's sun respectively and be connected, two star gear train drive mechanism symmetries install on the input shaft, and two planetary gear train drive mechanism's spur gear respectively with straight-teeth gear one with straight-teeth gear two meshing connection, straight-teeth gear one and straight-teeth gear two pass through the bearing and install two terminal at the jackshaft of improving crank mechanism, improvement crank mechanism be connected with the output mechanism transmission, output mechanism install on the output shaft. The invention realizes stepless speed change by combining the improved crank mechanism and the gear rack, and is more stable and more efficient and has smaller pulsation compared with the traditional mechanical stepless speed change device.

Description

Impact-resistant mechanical stepless speed changer
Technical Field
The invention belongs to the technical field of stepless speed change, and particularly relates to an impact-resistant mechanical stepless speed changer.
Background
The stepless speed change device is a transmission device commonly used in a mechanical transmission system, and can realize the normal operation of a machine under different working conditions through the gradual change of the transmission ratio, thereby improving the efficiency of the machine. The existing mechanical stepless speed changer mainly comprises three types of friction type, hydraulic type and pulse type. Compared with other continuously variable transmissions, the pulse type continuously variable transmission can achieve wider speed change range and more accurate transmission, but in the prior art, the pulse type continuously variable transmission mainly adopts a connecting rod mechanism as a pulse generator, and the performance of the continuously variable transmission is severely restricted by larger pulsation degree and unbalanced force, so that the bearing capacity and the impact resistance of the continuously variable transmission are relatively weak. In order to make the speed change more stable, a patent with publication number CN105276098B discloses a movable tooth stepless speed change transmission device, a patent with publication number CN105697708B discloses a novel mechanical stepless speed change device, and a patent with publication number CN110056634A discloses a three-planetary-row four-section hydraulic mechanical stepless speed change box, but the above devices still have great defects on the control of the pulsation degree, and the bearable torque and the impact resistance of the device still need to be improved. Therefore, the research and development of the mechanical stepless speed change device with high bearing performance, stability and small pulsation degree has higher engineering application value and practical significance.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an impact-resistant mechanical continuously variable transmission which is more stable, more efficient and strong in impact resistance.
The technical scheme adopted by the invention is as follows: an impact-resistant mechanical continuously variable transmission comprises a rack 100, a speed regulating mechanism 200, an input shaft 300, two planetary gear train transmission mechanisms 400, a first straight gear 500, a second straight gear 600, an improved crank mechanism 700, an output mechanism 800 and an output shaft 900; a first group of mounting holes 101, a second group of mounting holes 102, a third group of mounting holes 103, a fourth group of mounting holes 104, a fifth group of mounting holes 105 and a sixth group of mounting holes 106 are formed in the frame 100; the control gear 203 and the idle gear 204 of the speed regulating mechanism 200 are respectively meshed with the sun expansion gears 410 of the two star gear train transmission mechanisms 400; the input shaft 300 is mounted in the third set of mounting holes 103 of the frame 100 through bearings; the two planetary gear train transmission mechanisms 400 are symmetrically arranged on the input shaft 300, and cylindrical gears 401 of the two planetary gear train transmission mechanisms 400 are respectively in meshed connection with a first straight gear 500 and a second straight gear 600; the first straight gear 500 and the second straight gear 600 are arranged at two tail ends of an intermediate shaft 701 of the improved crank mechanism 700 through bearings; the improved crank mechanism 700 is in transmission connection with the output mechanism 800; the output mechanism 800 is arranged on an output shaft 900; the output shaft 900 is mounted in the fifth set of mounting holes 105 of the frame 100 through a bearing.
The speed regulating mechanism 200 comprises a control shaft 201, an idler shaft 202, a control gear 203 and an idler 204; the control shaft 201 is mounted in the first set of mounting holes 101 of the frame 100 through bearings, and a control gear 203 is fixedly mounted on the control shaft 201; the idler shaft 202 is mounted in the second set of mounting holes 102 of the frame 100 through bearings, and an idler 204 is fixedly mounted on the idler shaft 202; the idler gear 204 is in meshed connection with the control gear 203.
The two planetary gear train transmission mechanisms 400 respectively comprise a cylindrical gear 401, a connecting ring 402, a planet carrier 403, an inner gear ring 404, a first planet gear 405, a second planet gear 406, a third planet gear 407, a fourth planet gear 408, a sun gear 409 and a sun expansion gear 410; the cylindrical gear 401 is mounted on the input shaft 300 through a bearing, and the cylindrical gear 401 is fixedly connected with the connecting ring 402 through a boss on the end face of the cylindrical gear 401; the connecting ring 402 is rotatably sleeved on the input shaft 300 and is fixedly connected with the inner gear ring 404; the inner gear ring 404 is rotatably sleeved on the input shaft 300 and is internally meshed with a first planet wheel 405, a second planet wheel 406, a third planet wheel 407 and a fourth planet wheel 408; the planet wheel I405, the planet wheel II 406, the planet wheel III 407 and the planet wheel IV 408 are arranged on the planet carrier 403; the planet carrier 403 is fixedly arranged on the input shaft 300; the sun gear 409 is mounted on the input shaft 300 through a bearing and is in external meshing connection with the first planet gear 405, the second planet gear 406, the third planet gear 407 and the fourth planet gear 408, and the sun gear 409 is fixedly connected with a boss on the end face of the sun expansion gear 410 through a flange arranged on the end face of the sun gear 409; the sun expansion gear 410 is mounted on the input shaft 300 through a bearing.
In the impact-resistant mechanical continuously variable transmission, the tooth widths of the control gear 203 and the idle gear 204 of the speed regulating mechanism 200 are 2 times of the tooth widths of the sun expansion gears 410 of the two planetary gear train transmission mechanisms 400.
The improved crank mechanism 700 comprises an intermediate shaft 701, a reducing roller 702, a first rack 703, a first pinion 704, a second rack 705 and a second pinion 706; the intermediate shaft 701 is mounted in a fourth group of mounting holes 104 of the frame 100 through a bearing; the first pinion 704 is mounted on the intermediate shaft 701 through a bearing; the diameter-variable roller 702 is provided with a straight notch 7020 along the diameter direction, the diameter-variable roller 702 is rotatably sleeved on the intermediate shaft 701 through the straight notch 7020, and two end faces of the diameter-variable roller 702 are symmetrically provided with a first mounting table 7021 and a second mounting table 7022 along the direction of the straight notch 7020; a rack I703 is fixedly arranged on a mounting table I7021 of the reducing roller 702; the first rack 703 is meshed with the first pinion 704; a flange is arranged on one end face of the first pinion 704 and is fixedly connected with the first straight gear 500; a second rack 705 is fixedly arranged on the second mounting table 7022; the second rack 705 is in meshed connection with the second pinion 706; one end face of the second pinion 706 is provided with a flange which is fixedly connected with the second straight gear 600.
The output mechanism 800 comprises a bracket 801, a horizontal moving frame 802, a first spring 803, a second spring 804, a first output rack 805, a second output rack 806, a first output gear 807, a second output gear 808 and an overrunning clutch 809; the bracket 801 is fixedly arranged on the bottom surface of the rack 100; a horizontal moving frame 802 is slidably arranged in the bracket 801; the horizontal moving frame 802 is in transmission connection with the reducing roller 702 of the improved crank mechanism 700, and the horizontal moving frame 802 is provided with a mounting groove 8020 in the horizontal direction and a first guide rod 8021 and a second guide rod 8022 in the horizontal direction; a first spring 803 and a second spring 804 are respectively sleeved on the first guide rod 8021 and the second guide rod 8022 of the horizontal moving frame 802, and the tail ends of the first guide rod 8021 and the second guide rod 8022 of the horizontal moving frame 802 penetrate through a sixth group of mounting holes 106 formed in the rack 100; the upper end and the lower end in the installation groove 8020 of the horizontal moving frame 802 are provided with a first output rack 805 and a second output rack 806 which are arranged in a staggered way from front to back; the first output rack 805 is meshed and connected with the first output gear 807; the second output rack 806 is meshed with the second output gear 808, and the first output gear 807 and the second output gear 808 are both mounted on the output shaft 900 through an overrunning clutch 809.
The invention has the beneficial effects that: the invention realizes stepless speed change by combining the improved crank mechanism and the gear and rack meshing output, is more stable and more efficient than the traditional mechanical stepless speed change device, has smaller pulsation, can transmit great torque and improve transmission precision due to the adoption of gear tooth meshing transmission, and obtains a motion conversion part with small impact and noise.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a block diagram of the present invention with the frame removed;
FIG. 3 is a split structural view of the planetary gear train transmission of the present invention;
FIG. 4 is a structural view of the improved crank mechanism of the present invention;
FIG. 5 is a block diagram of the output mechanism of the present invention with the bracket removed;
FIG. 6 is a block diagram of the housing of the present invention;
FIG. 7 is a view showing a construction of a connection of the improved crank mechanism of the present invention with the output mechanism;
wherein: 100-a frame; 101-a first set of mounting holes; 102-a second set of mounting holes; 103-a third set of mounting holes; 104-a fourth set of mounting holes; 105-a fifth set of mounting holes; 106-a sixth set of mounting holes; 200-a speed regulating mechanism; 201-control shaft; 202-an idler shaft; 203-control gear; 204-an idler wheel; 300-an input shaft; 400-planetary gear train transmission mechanism; 401-cylindrical gear; 402-a connecting ring; 403-a planet carrier; 404-ring gear; 405-planet wheel one; 406-planet two; 407-planet gear three; 408-planet four; 409-sun gear; 410-sun expansion gear; 500-a spur gear one; 600-a second spur gear; 700-improving a crank mechanism; 701-intermediate shaft; 702-a variable diameter roller; 7020-straight notch; 7021-mounting table one; 7022-mounting table two; 703-rack one; 704-pinion one; 705-rack two; 706-pinion two; 800-an output mechanism; 801-a scaffold; 802-horizontal movement frame; 8020-installing the groove; 8021-guide bar one; 8022-guide bar two; 803-spring one; 804-spring two; 805-output rack one; 806-output rack two; 807-output gear one; 808-output gear two; 809-overrunning clutch; 900-output shaft.
Detailed Description
As shown in fig. 1 to 7, an impact-resistant mechanical continuously variable transmission includes a frame 100, a speed regulation mechanism 200, an input shaft 300, two planetary gear train transmission mechanisms 400, a first spur gear 500, a second spur gear 600, an improved crank mechanism 700, an output mechanism 800, and an output shaft 900; a first group of mounting holes 101, a second group of mounting holes 102, a third group of mounting holes 103, a fourth group of mounting holes 104, a fifth group of mounting holes 105 and a sixth group of mounting holes 106 are formed in the frame 100; the control gear 203 and the idle gear 204 of the speed regulating mechanism 200 are respectively meshed with the sun expansion gears 410 of the two star gear train transmission mechanisms 400; the input shaft 300 is mounted in the third set of mounting holes 103 of the frame 100 through bearings; the two planetary gear train transmission mechanisms 400 are symmetrically arranged on the input shaft 300, and cylindrical gears 401 of the two planetary gear train transmission mechanisms 400 are respectively meshed with a first straight gear 500 and a second straight gear 600; the first straight gear 500 and the second straight gear 600 are arranged at two tail ends of an intermediate shaft 701 of the improved crank mechanism 700 through bearings; the improved crank mechanism 700 is in transmission connection with the output mechanism 800; the output mechanism 800 is arranged on an output shaft 900; the output shaft 900 is mounted in the fifth set of mounting holes 105 of the frame 100 through a bearing.
The speed regulating mechanism 200 comprises a control shaft 201, an idler shaft 202, a control gear 203 and an idler 204; the control shaft 201 is mounted in the first set of mounting holes 101 of the frame 100 through bearings, and the control gear 203 is mounted on the control shaft 201 through a flat key; the idler shaft 202 is mounted in the second set of mounting holes 102 of the frame 100 through bearings, and an idler 204 is mounted on the idler shaft 202 through a flat key; half of the tooth width of the idle gear 204 is meshed with half of the tooth width of the control gear 203.
The two planetary gear train transmission mechanisms 400 respectively comprise a cylindrical gear 401, a connecting ring 402, a planet carrier 403, an inner gear ring 404, a first planet gear 405, a second planet gear 406, a third planet gear 407, a fourth planet gear 408, a sun gear 409 and a sun expansion gear 410; the cylindrical gear 401 is mounted on the input shaft 300 through a bearing, and the cylindrical gear 401 is fixed on one end face of the connecting ring 402 through a boss on the end face of the cylindrical gear by a screw; the connecting ring 402 is rotatably sleeved on the input shaft 300, and the other end surface of the connecting ring is fixedly connected with the inner gear ring 404 through a screw; the inner gear ring 404 is rotatably sleeved on the input shaft 300 and is internally meshed with a first planet wheel 405, a second planet wheel 406, a third planet wheel 407 and a fourth planet wheel 408; the planet wheel I405, the planet wheel II 406, the planet wheel III 407 and the planet wheel IV 408 are arranged on the planet carrier 403; the planet carrier 403 is mounted on the input shaft 300 through a flat key; the sun gear 409 is mounted on the input shaft 300 through a bearing and is externally meshed with the first planet gear 405, the second planet gear 406, the third planet gear 407 and the fourth planet gear 408, and a flange on the end face of the sun gear 409 is fixed on a boss on the end face of the sun expansion gear 410 through a screw; the sun expansion gear 410 is mounted on the input shaft 300 through a bearing.
The tooth widths of the control gear 203 and the idle gear 204 of the speed regulating mechanism 200 are 2 times of the tooth widths of the sun expansion gears 410 of the two planetary gear train transmission mechanisms 400, one half of the tooth width of the control gear 203 is meshed with the sun expansion gears 410 in the horizontal direction, one half of the tooth width of the idle gear 204 is meshed with the sun expansion gears 410 in the horizontal direction, and the other half of the tooth width of the control gear 203 is meshed with the other half of the tooth width of the idle gear 204 in the vertical direction.
The improved crank mechanism 700 comprises an intermediate shaft 701, a reducing roller 702, a first rack 703, a first pinion 704, a second rack 705 and a second pinion 706; the intermediate shaft 701 is mounted in a fourth group of mounting holes 104 of the frame 100 through a bearing; the first pinion 704 is mounted on the intermediate shaft 701 through a bearing; the diameter-variable roller 702 is provided with a straight notch 7020 along the diameter direction, the diameter-variable roller 702 is rotatably sleeved on the intermediate shaft 701 through the straight notch 7020, and two end faces of the diameter-variable roller 702 are symmetrically provided with a first mounting table 7021 and a second mounting table 7022 along the direction of the straight notch 7020; a rack I703 is arranged on an installation platform I7021 of the reducing roller 702 through a screw; the first rack 703 is meshed with the first pinion 704; a flange is arranged on one end face of the first pinion 704 and is fixed with the first straight gear 500 through a screw; a second rack 705 is mounted on the second mounting table 7022 through a screw; the second rack 705 is meshed with the second pinion 706; one end face of the second pinion 706 is provided with a flange and is fixed with the second straight gear 600 through a screw.
The output mechanism 800 comprises a bracket 801, a horizontal moving frame 802, a first spring 803, a second spring 804, a first output rack 805, a second output rack 806, a first output gear 807, a second output gear 808 and an overrunning clutch 809; the bracket 801 is installed on the bottom surface of the frame 100 through screws; a horizontal moving frame 802 is slidably arranged in the bracket 801; the horizontal moving frame 802 is in contact transmission with the reducing roller 702 of the improved crank mechanism 700, and the horizontal moving frame 802 is provided with a mounting groove 8020 in the horizontal direction and a first guide rod 8021 and a second guide rod 8022 in the horizontal direction; a first spring 803 and a second spring 804 are respectively sleeved on the first guide rod 8021 and the second guide rod 8022 of the horizontal moving frame 802, and the tail ends of the first guide rod 8021 and the second guide rod 8022 of the horizontal moving frame 802 penetrate through a sixth group of mounting holes 106 formed in the rack 100; the upper end and the lower end in the mounting groove 8020 of the horizontal moving frame 802 are fixed with a first output rack 805 and a second output rack 806 through screws, and the first output rack 805 and the second output rack 806 are installed in a front-back relative staggered manner; the first output rack 805 is meshed with the first output gear 807; the second output rack 806 is meshed with the second output gear 808, and the first output gear 807 and the second output gear 808 are both mounted on the output shaft 900 through an overrunning clutch 809.
The overrunning clutch 809 is prior art.
When the invention works, the input shaft 100 rotates at a constant speed to drive the planet carrier 403 of the two symmetrically-mounted planetary gear train transmission mechanisms 400 to rotate at a constant speed, then the planet gear one 405, the planet gear two 406, the planet gear three 407 and the planet gear four 408 rotate around the sun gear 409, then the inner gear ring 404, the connecting ring 402 and the cylindrical gear 401 rotate at a constant speed to drive the straight gear one 500 and the straight gear two 600 to rotate at the same speed in the same direction, further the pinion gear one 704 and the pinion gear two 706 rotate at the same speed in the same direction, thereby driving the reducing roller 702 to rotate at a constant speed, then driving the horizontal moving frame 802 to realize horizontal reciprocating motion under the action of the spring one 803 and the spring two 804, enabling the output rack one 805 and the output rack two 806 to respectively drive the output gear one 807 and the output gear two 808 which are engaged with the output rack to do reciprocating rotary motion, and because the symmetrically, the motion of the output shaft 900 is a stable unidirectional rotational motion.
The speed change principle of the invention is as follows: the rotation of the drive control gear 203 drives the idle gear 204 to rotate, drives the two sun expansion gears 410 to rotate in opposite directions, realizes the differential transmission of the two planetary gear train transmission mechanisms 400, enables the two cylindrical gears 401 to rotate in the same direction and at different speeds, further drives the first straight gear 500 and the second straight gear 600 to rotate in the same direction and at different speeds, enables the first pinion 704 and the second pinion 706 to rotate in the same direction and at different speeds, and adjusts the distance a (0-x) from the periphery of the reducing roller 702 to the middle shaft 701, namely adjusts the size of a crank, so that the linear speed of the circular motion of the reducing roller 702 is changed, further the speed of the horizontal reciprocating linear motion of the horizontal moving frame 802 is changed, and further the stepless speed change of the output shaft 900 is realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. An impact-resistant mechanical continuously variable transmission characterized by: the speed regulation device comprises a rack (100), a speed regulation mechanism (200), an input shaft (300), two planetary gear train transmission mechanisms (400), a first straight gear (500), a second straight gear (600), an improved crank mechanism (700), an output mechanism (800) and an output shaft (900); a first group of mounting holes (101), a second group of mounting holes (102), a third group of mounting holes (103), a fourth group of mounting holes (104), a fifth group of mounting holes (105) and a sixth group of mounting holes (106) are formed in the rack (100); a control gear (203) and an idle gear (204) of the speed regulating mechanism (200) are respectively in meshed connection with sun expansion gears (410) of two star gear train transmission mechanisms (400); the input shaft (300) is arranged in a third group of mounting holes (103) of the frame (100) through a bearing; the two planetary gear train transmission mechanisms (400) are symmetrically arranged on the input shaft (300), and cylindrical gears (401) of the two planetary gear train transmission mechanisms (400) are respectively in meshed connection with a first straight gear (500) and a second straight gear (600); the first straight gear (500) and the second straight gear (600) are mounted at two tail ends of an intermediate shaft (701) of the improved crank mechanism (700) through bearings; the improved crank mechanism (700) is in transmission connection with the output mechanism (800); the output mechanism (800) is arranged on the output shaft (900); the output shaft (900) is arranged in a fifth group of mounting holes (105) of the frame (100) through a bearing.
2. An impact-resistant mechanical continuously variable transmission as claimed in claim 1, wherein: the speed regulating mechanism (200) comprises a control shaft (201), an idler shaft (202), a control gear (203) and an idler (204); the control shaft (201) is mounted in the first group of mounting holes (101) of the frame (100) through bearings, and a control gear (203) is fixedly mounted on the control shaft (201); the idler shaft (202) is mounted in a second group of mounting holes (102) of the frame (100) through bearings, and an idler (204) is fixedly mounted on the idler shaft (202); the idle gear (204) is meshed with the control gear (203).
3. An impact-resistant mechanical continuously variable transmission as claimed in claim 1, wherein: the two planetary gear train transmission mechanisms (400) respectively comprise a cylindrical gear (401), a connecting ring (402), a planetary carrier (403), an inner gear ring (404), a first planetary gear (405), a second planetary gear (406), a third planetary gear (407), a fourth planetary gear (408), a sun gear (409) and a sun expansion gear (410); the cylindrical gear (401) is mounted on the input shaft (300) through a bearing, and the cylindrical gear (401) is fixedly connected with the connecting ring (402) through a boss on the end face of the cylindrical gear; the connecting ring (402) is rotatably sleeved on the input shaft (300) and is fixedly connected with the inner gear ring (404); the inner gear ring (404) is rotatably sleeved on the input shaft (300) and is in inner meshing connection with a planet wheel I (405), a planet wheel II (406), a planet wheel III (407) and a planet wheel IV (408); the planet wheel I (405), the planet wheel II (406), the planet wheel III (407) and the planet wheel IV (408) are arranged on the planet carrier (403); the planet carrier (403) is fixedly arranged on the input shaft (300); the sun gear (409) is mounted on the input shaft (300) through a bearing and is in external meshing connection with the planet gear I (405), the planet gear II (406), the planet gear III (407) and the planet gear IV (408), and the sun gear (409) is fixedly connected with a boss on the end face of the sun expansion gear (410) through a flange arranged on the end face of the sun gear (409); the sun expansion gear (410) is arranged on the input shaft (300) through a bearing.
4. An impact-resistant mechanical continuously variable transmission as claimed in claims 2 and 3, wherein: the tooth widths of the control gear (203) and the idle gear (204) of the speed regulating mechanism (200) are 2 times of the tooth widths of the sun expansion gears (410) of the two planetary gear train transmission mechanisms (400).
5. An impact-resistant mechanical continuously variable transmission as claimed in claim 1, wherein: the improved crank mechanism (700) comprises an intermediate shaft (701), a reducing roller (702), a first rack (703), a first pinion (704), a second rack (705) and a second pinion (706); the intermediate shaft (701) is arranged in a fourth group of mounting holes (104) of the frame (100) through a bearing; the first pinion (704) is mounted on the intermediate shaft (701) through a bearing; the reducing roller (702) is provided with a straight notch (7020) along the diameter direction, the reducing roller (702) is rotatably sleeved on the intermediate shaft (701) through the straight notch (7020), and two end faces of the reducing roller (702) are symmetrically provided with a first mounting table (7021) and a second mounting table (7022) along the direction of the straight notch (7020); a rack I (703) is fixedly arranged on a mounting table I (7021) of the reducing roller (702); the first rack (703) is meshed with the first pinion (704); one end face of the first pinion (704) is provided with a flange and is fixedly connected with the first straight gear (500); a second rack (705) is fixedly arranged on the second mounting table (7022); the second rack (705) is in meshed connection with the second pinion (706); and one end face of the second pinion (706) is provided with a flange which is fixedly connected with the second straight gear (600).
6. An impact-resistant mechanical continuously variable transmission as claimed in claim 1, wherein: the output mechanism (800) comprises a bracket (801), a horizontal moving frame (802), a first spring (803), a second spring (804), a first output rack (805), a second output rack (806), a first output gear (807), a second output gear (808) and an overrunning clutch (809); the bracket (801) is fixedly arranged on the bottom surface of the rack (100); a horizontal moving frame (802) is installed in the bracket (801) in a sliding manner; the horizontal moving frame (802) is in transmission connection with a reducing roller (702) of the improved crank mechanism (700), and an installation groove (8020) in the horizontal direction, a first guide rod (8021) and a second guide rod (8022) in the horizontal direction are arranged on the horizontal moving frame (802); a first spring (803) and a second spring (804) are respectively sleeved on the first guide rod (8021) and the second guide rod (8022) of the horizontal moving frame (802), and the tail ends of the first guide rod (8021) and the second guide rod (8022) of the horizontal moving frame (802) penetrate through a sixth group of mounting holes (106) formed in the rack (100); the upper end and the lower end in the mounting groove (8020) of the horizontal moving frame (802) are provided with a first output rack (805) and a second output rack (806), and the first output rack and the second output rack are arranged in a staggered manner in a front-back opposite manner; the first output rack (805) is meshed and connected with the first output gear (807); the second output rack (806) is meshed with the second output gear (808), and the first output gear (807) and the second output gear (808) are both mounted on the output shaft (900) through an overrunning clutch (809).
CN201911288993.6A 2019-12-16 2019-12-16 Impact-resistant mechanical stepless speed changer Pending CN110805673A (en)

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CN201911288993.6A CN110805673A (en) 2019-12-16 2019-12-16 Impact-resistant mechanical stepless speed changer

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Application Number Priority Date Filing Date Title
CN201911288993.6A CN110805673A (en) 2019-12-16 2019-12-16 Impact-resistant mechanical stepless speed changer

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CN110805673A true CN110805673A (en) 2020-02-18

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WO2012011662A2 (en) * 2010-07-19 2012-01-26 Shin Young-Chul Continuously variable transmission
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CN106662230A (en) * 2014-03-18 2017-05-10 R·R·拉金德兰 Continuous variable transmission with uniform input-to-output ratio that is non-dependent on friction
CN108412982A (en) * 2018-05-11 2018-08-17 中国人民解放军陆军军事交通学院 A kind of novel combination type non-circular gear infinitely variable speed transmission
CN109958744A (en) * 2019-04-12 2019-07-02 苏州鼎智瑞光智能科技有限公司 A kind of optimization method of pulse-type continuously variable transmission and its non-circular gear
CN211715700U (en) * 2019-12-16 2020-10-20 哈尔滨理工大学 Small-pulsation mechanical stepless speed change device

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CN105697708A (en) * 2016-03-11 2016-06-22 湘潭大学 Novel mechanical stepless speed change device
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Application publication date: 20200218